Question

Why is the spectrophotometer set at 0.000 absorbance for the uninoculated tube of broth?

Why is the spectrophotometer set at 0.000 absorbance for the uninoculated tube of broth?

Science   Biology   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
a. You put a cuvette into the spectrophotometer and obtain an absorbance reading of 2.4. Is...
a. You put a cuvette into the spectrophotometer and obtain an absorbance reading of 2.4. Is this a believable reading? b. Your instructor takes the cuvette, flicks it with a finger, and then replaces it in the spectrophotometer. The reading is now 0.314. What do you think happened?
the absorbance scale of a spectrophotometer was tested at 254 nm wavelength with a standard solution...
the absorbance scale of a spectrophotometer was tested at 254 nm wavelength with a standard solution that had a known absorbance value of 0.470. Eight replicate measurements of the absorbance with the spectrometry gave the following results: Mean = 0.465; standard deviation = 0.005. The 95% confidence interval of these measurements will have this value as its upper confidence limit
If you forgot to set the 100% transmittance on the spectrophotometer and it was inaccurate when...
If you forgot to set the 100% transmittance on the spectrophotometer and it was inaccurate when you measured your samples by +.08 absorbance units, which of the following measurements would be the most affected? Circle your answer 1.2 A units 0.65 A units 0.12 A units
The absorbance of a cationic iron(II) sample solution was measured in a spectrophotometer, but the instrument...
The absorbance of a cationic iron(II) sample solution was measured in a spectrophotometer, but the instrument returned an error because the absorbance was too high. The sample was then diluted by using a pipette to take 100.0 μL of the sample and injecting it into a cuvette already containing 2.00 mL of water (total volume is 2.00 mL + 100.0 μL). The absorbance value of the diluted solution corresponded to a concentration of 8.21×10−6 M . What was the concentration...
In a spectrophotometer of 550 nm, and quantitate protein by using biruet reagent. Calculate true absorbance...
In a spectrophotometer of 550 nm, and quantitate protein by using biruet reagent. Calculate true absorbance of the sample Sample Transmittance biuret reagent 99.42 % biuret reagent + protein 16.59 %
Name a disadvantage of each different media tube(slant/deep/broth)
Name a disadvantage of each different media tube(slant/deep/broth)
PART A. Your lab instructor gives you a very cloudy test tube (5 ml broth) of...
PART A. Your lab instructor gives you a very cloudy test tube (5 ml broth) of Serratia and tells you that you can earn 50 points extra credit if you can determine the amount of cells in the tube. 1. what is the procedure you are going to use? 2. what is the first step in the procedure 3. since the broth is very cloudy, what dilution is appropriate and why? 4. draw your set up from the previous question...
A UV/vis light absorbance spectrophotometer produced the following linear calibration equation for a given standard, A=0.653C+0.0342...
A UV/vis light absorbance spectrophotometer produced the following linear calibration equation for a given standard, A=0.653C+0.0342 where C is the molar concentration and A is the absorbance. The detector's lifetime was running out, so the lab manager replaced the detector. Before the lab manager properly aligned the detector and diffraction grating, a student measured different standard concentrations and got the data in the second column of the table. The lab manager aligned the detector and diffraction grating and alerted the...
Why the monochromatic light is used in spectroscopy or in spectrophotometer machine?
Why the monochromatic light is used in spectroscopy or in spectrophotometer machine?
The phenylalanine test is conducted A. in a broth tube B. on an agar slant C....
The phenylalanine test is conducted A. in a broth tube B. on an agar slant C. on an agar plate. D. A & C When is the reagent added to the medium? A. When the medium is prepared B. Right after inoculation C. Right before incubation D. After incubation What indicates a positive catalase test? A. Color change of the hydrogen peroxide B. Clotting of plasma on the slide C. Presence of bubbles on the slide D. A & B
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT